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Jomo Lumina

@jomolumina

Senior Software Developer at TechSpotDEV advising on a regulated LIMS architecture and contributing C# code for complex components.

Zambia

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What I'm looking for

I’m looking for a team-oriented environment where respect, open communication, and shared ambition are central. I value hands-on learning, collaboration, mentoring, and contributing to continuous improvement.

At TechSpotDEV, I advise on the architecture and technical direction of a Laboratory Information Management System, review design decisions, and contribute C# code for complex components. I also support troubleshooting and performance tuning for the LIMS.

At NetOne Technology Service Group, I developed a custom web-based system for procurement requisitions, employee management, and office expenditures using .NET Core and React. Across my work, I’ve contributed to systems including MyLiberty, client web apps, and cloud-based solutions, and trained large language models to understand and generate C# code.

Experience

Work history, roles, and key accomplishments

Current

Senior C# Developer

Current

TechSpotDEV

Jun 2025 - Present (1 year 3 months)

Served on an advisory panel providing strategic guidance on the architecture and technical direction of a Laboratory Information Management System (LIMS). Reviewed design decisions, ensured alignment with .NET best practices, and contributed critical C# code for complex components.

C#.NET Architecture LIMS Performance Optimization

Google C# LLM Developer

Turing

Nov 2024 - Apr 2025 (5 months)

Trained large language models to understand, generate, and reason about C# code. Crafted prompts and responses, evaluated model performance, and iteratively improved outcomes through prompt engineering and fine-tuning.

C#LLM Prompt Engineering Fine Tuning Testing

Senior Software Developer

NetOne Technology Service Group

Jun 2023 - May 2024 (11 months)

Led the lifecycle of a custom web-based system digitizing procurement, employee management, and office expenditures. Used .NET Core for the backend API and React for the frontend.

.NET Core React Web Development System Architecture

Systems Architect/Senior Software Developer

FullStack PTY LTD

Oct 2022 - Jun 2023 (8 months)

Designed new systems operating locally and in the cloud using Azure and AWS. Built function apps on Azure, configured input/output rules on AWS, and maintained CI/CD pipelines.

Azure AWS Architecture CI CD Pipelines

Senior Software Engineer

CyberPro Consulting

Oct 2019 - May 2022 (2 years 7 months)

Developed and maintained MyLiberty, a client portal for policy management, as a full-stack developer using ReactJS and C# .NET Core 3. Facilitated communication with various departments within Liberty IT.

React C#.NET Core Fullstack Development

Frontend MEAN Stack Developer

HelloComputer

Nov 2017 - Sep 2019 (1 year 10 months)

Maintained and enhanced client web apps using Angular and Node.js, developed responsive SEO-friendly components, integrated RESTful APIs, and created cross-client compatible email templates. Contributed to a cross-platform mobile app with Angular and Ionic.

Angular NodeJS REST APIs SEO Ionic Umbraco Orchard CMS

ElasticSearch and RabbitMQ Consultant

Emisha Systems

Nov 2016 - Oct 2017 (11 months)

Led the upgrade of ElasticSearch, installed and configured X-Pack, integrated with Active Directory via LDAP, and deployed Logstash to ingest messaging data from RabbitMQ. Provided ongoing support and optimization for the ElasticSearch cluster.

Elasticsearch RabbitMQ Logstash LDAP X Pack

Software Developer Intern

Siemens S.A./N.V.

Jan 2013 - Dec 2014 (1 year 11 months)

Designed and developed web and desktop applications using .NET framework with N-Tier architecture, integrated Oracle database, and developed a barcode/RFID scanning application for Motorola handheld devices with a RESTful API for data synchronization.

.NET VB.NET WCF Oracle REST APIs Barcode and RFID Technology

Education

Degrees, certifications, and relevant coursework

Siemens S.A./N.V.

Internship, Software Development

2013 - 2014

Completed an internship at Siemens, designing and developing web and desktop applications using .NET framework and integrating Oracle databases.

Belgium Campus IT-Varsity

Bachelor's in Computing (NQF 8), Computing

2010 - 2013

Pursued a Bachelor's degree in Computing (NQF 8) with key subjects including programming, databases, networking, cybersecurity, applied math, statistics, and operations research.